Paste-applying apparatus for can ends.



A. J GHNSN. PASTE APPLYING APPARATUS FOR GAN ENDS.

APPLICATION FILED SEPT.23, 1908.

Pacem may l?, 1910.

WITNESSE @L "fr". l

AXEL JOHNSON, OF

OAKLAND, CALIFORNIA.

PABTE-APPLYING APPARATUS FOR CAN ENDS.

Speoication ot Letters Patent.

Patented May 17, 1910.

Application tiled September 23, 1908. Serial No. 454,302.

Toallwhmn'ltmayamcem: I

Bc it known that I, AXEL JQHNSON, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Paste-hpplyin Apparatus for Can Ends, of which the fo lowing is a specification.

The hereinafter described invention relates -to an improved apparatus for applying liquid paste or sealing cement to the flange of a can head, so that when the head is applied to the open end of a can by being crimped thereon the paste or sealing material previously applied to the flange of the can head will act to form a perfect seal for the crim d joint, thus dispensing with the use of so der in the uniting of the head to the open end of the can.

To comprehend the invention reference should be had to the accompanying sheet of drawings, wherein- Figure 1 is a. vertical sectional view of the apparatus, there being illustrated two of the verticali movable can head holding plates carried y the rotatable table, the piston plungers associated therewith, and the connection between the said holding plates and the pistons, one of the holding plates being in a lowered position and its connected piston plunger raised to open the port for the admission of liquid paste or cement from the rotatable paste reservoir into the distributing nozzle, the other illustrated holding plate being shown in raised position, and its connected piston plunger lowered to force the liquid aste or cement from the distributing nozz e, the said view also disclosing the cam track on which moves the stem of the holding plates. Fig. 2 is an enlarged broken detail sectional view disclosing a portion of the rotatable paste holding reservoir, one of the ported receivin tubes carried thereby, the piston plunger ierein, the distributing nozzle carried by said tube, and the spring held valve within the tube.

In the drawings, the numeral 1 is used to designate any suitable style of a supporting structure, through bearings of which extends a horizontally disposed drive-shaft 2, the pinion 3 of which iutermcshes with a gear 4 secured on a vertically extended sleeve 5. This sleeve is fitted over and rotatable about a vertically disposed guide shaft 6, and to the said sleeve 5 is secured a carrier table 7, and a slight distance above the table 7, and, in the present case, integral with the sleeve 5 is located the paste holding reservoir 8.

l`he upper end of the shaft 6 pro]ect1ng above the cover 9 for the reservon' 8, is reduced, and has secured thereto a belt pulley 10, which is driven by a belt, not shown. The said shaft 6 has secured thereto within the reservoir 8, intermediate the u per end 0f the sleeve 5 and the cover 9 l) reservoir, a circular plate 1l, from which depends a series of stirrer blades 12, which blades work between the projections 13 upwardly extended a short distance from the bottom of the reservoir 8. Inasmuch as the drive shaft 6 is driven in an opposite direction to the rotation imparted to the sleeve 5, the blades 12, acting in conjunction with the projections 13 will maintain the liquid paste within the reservoir 8 in a constant state of agitation during the Working ofthe apparatus.

To the upper surface of the support 1 is secured a cam track 14, on which rests and rides, during the rotary movement of the carrier table 7, a series of vertically movable -stems 14', which stems are slidably held within the thmbles 15, rotatably held Within guide sleeves 16, carried by the brackets 17 de ending from the carrier table '7. Each thimljile 15 1s formed with a channeled depending circular wall 18, which bears against an outer encircling strap 20, the frictional bearing thus formed, during the rotary movement of the carrier table 7, imparting rotation to the thimbles 15 and the stems 14 slidably held thereto. The said stems 14 have att-ached to the upper ends thereof the canhead receiving and holding plates 21, each plate normally resting within one of the seats 22 of the series of seats in the carrier table 7.

Through the circular wall of the 'pa-ste holding reservoir 8, in the present case, a series of vertical bores 23 are formed, which bores communicate with the interior of the reservoir by a feed opening 23', and within cach of the bores 23 is located e vertically movable piston plun er 24, the lower end portion of the same icing slightly reduced to work within the paste receiving tube 25, tted within each of the vertical bores 23. The said receiving tubes are ported at 25',

so as to admit of paste iowing therein from 110 or the said "C 'l L thtI collar 32 thereon.

Vthe. llibf.y ,25.1

3th aste ejected from 'the tubes 25 etlubeg dbpYefthe valved 'Beat 2 6, which 1s ,ntrqlledbbythc ball",-Yalve2', held to its Seat b thefpreseu of-tbe spring 27, Fig. be drawingallTo the. lower end of extended below the reservoir an..ljxutvvardlyi .inclinedgdstrbutng nozzle *Lie-sec ,vwhichnozzles guide and di ange of the can head held onto b le lates v21. From each distributingff-nozz e l27 4extends an arm 28,

.which u'mgcarries a brush 28', the urpose lever is bifurcated so as to straddle the upper projecting end of its piston plunger 24 working-between the shoulder 32 and The operation of the machine may be givenin brief as follows :The can heads to have paste applied to the flange thereof are, during the rotary movement of the carrir table 7, deposited by an operator suit- 9 Y plates 21, working within the seats 22 of 'the carrier table, to receive onto the circular ilange thereof paste discharged from the tube 25. As the carrier table 7 is carried around, the stem 15, of the plates 21, is moved onto the inclined portion of the cam track 14, and is forced upwardly, carrying therewith the can head plate 21 and pressing the central rtion of the can head thereon against the ower end of the vertically mov- -able rod 29 so as to gradually elevate the said rod, and, through the connections 31 and 30, lowering the piston plunger 24. The first (portion of the downward` stroke of the sai piston lunger closing the port 25 and eut-ting o the flow of the paste from within the reservoir into the tube 25. As the piston plunger continues its downward movement and into the tube 25, the Bressuire of the iston plunger onto the 'quid npaste contained within the said tube unseatln the valve 26 and forcing the liquid within the said tube into the distributing nozzle 27', and through said nozzle onto the liange of the can head held on the can head plate 21. As the aste is applied to the lian e of the can hea the plate 21 is rotat by the movement of the thimble 15, which is driven by rictional contact with the encircling belt 20. As the stem 14' is carried onto the downwardly inclined portion of the cam track 14, the parts'are restored to normal position by gravity, the

tb parte iao admitted, filling stationed 'onto the can head holding treated can head being removed by the o erator. The pressure of the spring 27, t e moment the piston plunger commences its upward stroke, due to t-he downward movement of the rod 29, forces the valve 26 against its seat 26, rior to the piston plun ger moving upwar y suliciently far to uncover the port 25.

The action of only one of the can head plates and its associated parte has been set forth in the descri tion of the working of the apparatus in t 1e applying paste to the flange of a can head, the action of the remaining ones of the series being a mere dulication.

aving thus described the invention, what is claimed as newv and desired to be protected by Letters Patent s- 1. In an ap aratus for the described purpose, the com ination with a rotatable can head holder, of means for forcing the same upwardly, a ported reservoir for the holding o a sealing paste, a valved receiving tube into which the paste is delivered from the said reservoir, a distributing nozzle connect ed with the said tube, of associated devices actuated by the upward movement of the can head holder for closing the port of the paste holding reservoir and ejecting paste from within the receiving tube and through the distributing nozzle onto the flange of a held can head, and means for impartmg rotation to the can head holder.

2. In an apparatus for the described pur pose, the combination with a ported paste holding reservoir, of a vertically movable rotatable can head holder, devices for irnparting vertical movement to said holder and rotation thereto, a distributing nozzle and connecting means for conveying paste from the ported reservoir onto the flange of a can head contained on the can head holder, a device :for spreading the paste so applied. and means for controlling the ow of paste from within the reservoir onto the [lange of a held can head.

3. In an appara-tus for the described pur- Eose, the combination with a rotatable paste olding reservoir provided with a series of outlet port-s, a carrier table supporting the said reservoir, of mechanism for imparting rotation to the said carrier table and the reservoir supported thereby, agitatn devices within the reservoir, a series o vertically movable and rotatable can head hold ers working within the carrier table, devices for imparting rotation to the said can head holders during thc rotary movement of the carrier table, a series of valved receiving tubes into which paste is; delivered from the ported reservoir, a distributing nozzle connected with each of the receiving tubes, and associated devices actuated by the upward movement of the can hea-d holders for closing the porta of the reservoir and e]ecting ounce? paste vfrom within the receivingr tubes and through the distributing nozzles onto the lungchf u held can head.

4. In an apparatus for the described purose, the combination with n rotatable paste liolding reservoir provided with outlet ports, a rotary carrier upon which said reservoir is mounted, of mechanism for imparting rotation thereto, devices within the reservoir for agitating'the liquid material thcreln, a series of vertically movable and rotatable can head holders mounted on said carrier, means for imparting rotation to the can head holders, devices for receiving paste from the reservoir and delivering the same to the flange ot' a can head on the holders, and means for regulating the ow of material from Within the reservoir and through the distributing devices.

5. In an apparatus for the described purpose, the combination with a rotatable paste holding reservoir provided with a series of outlet ports, a series of controlled distributing nozzles receiving paste from the reservoir, devices for maintaining the paste wit-hin the reservoir in an agitated condition during the Working of the apparatus, mechanism for imparting rotation to the said reservoir, a series of piston plungers for controlling the outlet of the paste from the reservoir and forcing the same through the dis tributing nozzles, means for actuating said piston plungers, and a series of vertically movable and rotatable can head holders.

6. In an apparatus for the described purpose, the combination with the carrier table, of a paste holding reservoir provided with a series of outlet ports carried thereby, agitating devices within the reservoir, a series of vertically movable and rotatable can head holders supported by the carrier table, a series of distributing nozzles associated with the reservoir, a series of vertically movable piston plungers for controlling the ilow of material from the reservoir into the distribtit-ing nozzles and forcing the same through the said nozzles, devices for raising the can head holders, connections actuated by the vertical movement of the said holders to operate the piston plungers, and devices for imparting rotation to the can head holders.

7. In an ap aratus for the described pur pose, the com ination with a reservoir provided with a series of outlet ports, a rotary carrier u on which said reservoir 'is mounted, valved controlled distributing nozzles associated therewith and receiving paste from the said reservoir, mechanism for imparting rotation to said carrier, agitating means within the reservoir, and devices for controlling thc iiow of liquid paste from the reservoir into the distributing nozzles.

8. The combination with a rotatable and vertically movable can head holder, of a paste reservoir, a paste receiving tube connccted therewith having a port communieatin with Suid pus-to reservoir., und pro videdg with n vulve sont, a rixfiprocuting pis ton in said receiving tube, a movable valve in said rcceivin tube below said port, u spring for hol ing said vulve normally against said valve sont and a distributing nozzle connected with said tube, substun tially as specified.

9. The combination with u rotatable can head holder, of a paste reservoir, a paste receiving tube connected therewith having a port communicating with said paste reservoir, and provided with avalve seat, a reciprocating piston in said receiving' tube, a movable valve in said receiving tube below said port, a spring for holding said valve normally against said valve seat and a distributing nozzle connected with said tube, substantially as specified.

l0. The combination with a rotatable and vertically movable can head holder, of a paste reservoir, a paste receiving tube connected therewith having a port communicating with said paste reservoir, and provided Wlth a valve seat, a reciprocating piston in said receivin tube, a movable valve in said receiving tu e below said port, a spring for holding said valve normally against said valve Seat, a distributing nozzle connected with said tube, a vertically movable rod adapted to be centrally en aged by the can head as it is raised by sai holder and connections between said rod and said piston for automatically operating said piston, substantially as specified.

1l. The combination with a rotatable and vertically movable can hea-cl holder, of a paste reservoir, a paste receiving tube connected therewith having a port communieating with said paste reservoir, and provided with a valve seat, a reciprocating piston in said receiving tube, a movable valve in said receiving tube below said port, a spring for holding said valve normally against sa1d valve seat, a distributing nozzle connected with said tube, a vertically movable rod adapted to be centrally engaged by the can head as it is raised by said holder and connections between said rod and said piston for automatically operating said piston, the downward movement of said iston in said tube operating to unseat the va ve by pressure upon the interposed liquid in said tube, substantially as specified.

12. The combination with a rotar carrior, a plurality of vertically movab e and axially rotatable can head holders on said carrier, a paste containing reservoir on said carrier, a plurality of paste receivin tubes having ports communicating with sai reservoir, each of said tubes having a piston, a valve and a distributing nozzle, substantially as specified.

13. The combination with a rotary cara .valve and tier, u pluralit of vertically movable and axially vrotatab e can head holders on said carrier, a paste containing reservoir on said carrier, a plurality of paste recevin tubes having ports communicating with sai reservoir, each of said tubes having a piston, a

a distributing nozzle, and a plurods on said carrier lality of reciprocatin engaged by the can ada ted to be central y l hea s on the can head holders'as said holders are raised and connecting means between said rods and said pistons, substantially as specified. A

14. The combination with a rotary carrier, a plurality of verticall movable and axially rotatable can head ho 4ders on said carrier, a paste containing reservoir on said carrier, n plurality of paste receiving tubes having ports communlcating wlth said reservoir, each of said tubes having a piston, a valve and a distributing nozzle, a plurality" of reciprocating rods on said carrier adapted to be centrally en ged by the can heads on the can head ho ders as said holders are raised, connecting means between said rods and said pistons, and a stationary cam for raising said can head holders as'said' carrier rotates, substantially as specified.

15. The combination with a rotary carrier, a plurality of vertically movable and axially rotatab e can head holders on said carrier, a paste containing reservoir on said carrier, a plurality of paste receiving tubes having ports communicating with said reservoir, eac-h of said tubes having a. piston, a valve and a distributing nozzle, a plurality of reciprocatin rods on said carrier ada-pted to be centra ly engaged by the can heads en tho can head holders as said holders are raised, connecting means between said rods and said pistons, a stationary cam for raislng said can head holders as said carrier rotates, each of said valves havin a spring for holdin it normally closed, su stantially as specific 16. The combination with a rotatable can head holder, of a paste reservoir, a paste recelving tube connected therewith having a communicating with said paste rese1- v oir, and provided with a valve sea a reclprocating piston in said receivin tube, a movable valve in said receiving tu below said port, a spring for holding said valve normally against said valve seat, a distributing nozzle connected with said tube, and a brush for s reading the paste applied to the can hea flange by said nozzle, substantially as spiiied.

17. The combination with a rotary can head holder, of a paste reservoir, a paste receiving tube having a port communicating with said reservoir, a piston for opening and closing said port, a distributing nozzle connected to said receiving tube and a device for spreading the paste applied to the can head flange by Said'nozzle as the can head is rotated by said holder, substantially as specified.

'In testimony whereof I have signed my name to this s ication in the presence of two subscribing witnesses,

AXEL JOHNSON.

Witnesses:

N. A. Annen, D. B. RICHARDS. 

